Waste Water Engineering 3.0 ml of raw sewage is diluted to 300 ml. The D.O. concentration of the diluted sample at the beginning of the test was 8 mg/l. After 5 day-incubation at 20°C, the D.O. concentration was 5 mg/l. The BOD of raw sewerage is 100 mg/l 400 mg/l 300 mg/l 200 mg/l 100 mg/l 400 mg/l 300 mg/l 200 mg/l ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In sewage, the solids in mg per litre is 1000 to 1500 1500 to 2000 500 to 1000 100 to 500 1000 to 1500 1500 to 2000 500 to 1000 100 to 500 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The coagulant which is generally not used for treating the sewage, is Alum Ferric sulphate Ferric chloride Chlorinated coppers Alum Ferric sulphate Ferric chloride Chlorinated coppers ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The maximum spacing of manholes specified by Indian standard in sewers upto 0.3 m diameter is 75 m 20 m 45 m 30 m 75 m 20 m 45 m 30 m ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In primary sedimentation, the 0.2 mm inorganic solids get separated if specific gravity is 2.5 2.25 2.65 2.55 2.5 2.25 2.65 2.55 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If is the rugosity coefficient, is the bed slope of sewer, the velocity of flow in m/sec may be obtained by the formula V = (1/n) r2/3 s1/2 evolved by Manning Bazin Chezy Kutter Manning Bazin Chezy Kutter ANSWER DOWNLOAD EXAMIANS APP
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